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A ternary composite of graphene oxide/carbon dots/polypyrrole (GO/CDs/PPy) used as electrode active material for supercapacitor has been synthesized via in situ polymerization of GO/CDs with pyrrole under a mild condition. The CDs sandwiched between GO film and PPy layer can promote electron transportation in the ternary composite and thus reduce the internal resistance and charge transfer resistance...
In this work, a new poly(9,9-dioctylfluorene) (PFO) derivative (named PFIID) with the large conjugated planar surfaces was designed and synthesized, and the ability to sort sc-SWCNTs was investigated in detailed. The absorption spectra of sorted SWCNT solutions demonstrated that PFIID exhibited the ability to selectively and efficiently sort sc-SWCNTs from commercial arc discharge carbon nanotubes...
Graphene oxide in hard carbon/graphene composite is reduced by thermal treatment in inert atmosphere at a temperature in the range of 800–1100 °C. In this way, hard carbon/graphene composites with different effect of reduction on graphene oxide are obtained. Increasing heat treat temperature improves the reduction of graphene oxide (C/O atomic ratio in the range of 44–104) and diminishes the specific...
In this work, we investigated the ability of several poly(9,9-dioctylfluorene) (PFO) derivatives to selectively separate semiconducting single-walled carbon nanotube (sc-SWCNT) from commercial arc discharge SWCNTs. The results illustrated that the separation efficiency of PFO derivatives and the stability of sc-SWCNT inks increased with the sizes of conjugated systems in subunits. The relative height...
Mesophase pitch-based carbon–carbon (C/C) composites were fabricated by cycles of impregnation/carbonization using two different preforms. Air oxidation was used as a stabilization process prior to carbonization. In order to study the effects of air oxidation, composites without air oxidation were also fabricated for comparison. The results showed that the effect of air oxidation was different for...
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